John A. Hart

  • Chicago, IL
  • Pathologist
NPI1750433439PAC ID3779558069
Medicare services, 2024
2,215
Medicare patients, 2024
690
Hospital affiliations
5
Industry payments
$7,065
Medical group
1
Practice address
5841 S Maryland Ave, Chicago, IL 60637
Practice phone
Call (773) 702-1530
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

The University of Chicago Medical Center

Chicago, Illinois

See all 7 affiliations

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John A. Hart is a pathologist in Chicago, Illinois

John Hart practices at The University of Chicago Medical Center in Chicago, Illinois.

John Hart's NPI, 1750433439, was assigned on January 16, 2007. John Hart holds Illinois license 036082583.

NPI and contact details
Medicare PAC ID
3779558069
NPI enumeration date
January 16, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(773) 702-1530
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
66
Medical school graduation
1986

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

John A. Hart practices at The University of Chicago Medical Center in Chicago, Illinois

John Hart's primary practice is The University of Chicago Medical Center, at 5841 S Maryland Ave, Chicago, IL 60637 in Cook County. The practice phone is (773) 702-1530.

  • The University of Chicago Medical Center
    5841 S Maryland Ave, Chicago, IL 60637 · Cook CountyPhone(773) 702-1530

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

John A. Hart is affiliated with 6 sites of care and 1 medical group

John Hart's primary practice is The University of Chicago Medical Center in Chicago, Illinois. John Hart is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians (University of Chicago Physicians Group). Dmand AI also links John Hart to 4 more hospitals, each named with a free account.

See all 7 affiliations for John Hart

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at John A. Hart's practice

Dmand AI tracks the electronic health record (EHR) system at each site where John Hart practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
The University of Chicago Medical CenterAvailable with a free account
+5 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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John A. Hart is one of 63 pathologists in Illinois

Anatomic pathology is John Hart's primary specialty in the NPI Registry, under taxonomy code 207ZP0101X. John Hart is licensed in Illinois.

Specialties and state licenses

  • Anatomic pathology, IllinoisPrimaryLicense 036082583 · taxonomy 207ZP0101X

Pathologists near John Hart

Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

John A. Hart billed Medicare for 2,215 services in 2024

CMS data shows 2,215 Medicare services from John Hart across 10 procedure codes in 2024, for 690 Medicare patients. Medicare paid $73,573 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20242,215
Medicare patients690
Paid by Medicare$73,573
Procedure codes10

John Hart's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Lab and pathology
2023: 2,3142024: 2,2154%

John Hart compared with the Illinois median for pathologists, 2024

  • John Hart
  • Illinois median
Medicare services
2,215vs 1,0302.2 times
Medicare patients
690vs 40770% above

Medians across 55 pathologists in Illinois with Dmand AI profiles that report each measure.

John Hart's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by John Hart

Need commercial claims for John Hart?

Medicare shows one payer. Book a meeting to get commercial claims data for John Hart and other pathologists in Illinois.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

John A. Hart treated 690 Medicare patients in 2024, average age 70

CMS counts 690 Medicare patients who saw John Hart in 2024. The largest group is 65 to 74, with 373 patients. 75% of them have high blood pressure, and 68% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.06, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts John Hart's median patient age at 56, with 56% women.

Medicare patients, 2024690
Average age70
Average risk score2.06
Also on Medicaid30%

John Hart's Medicare patients by age, 2024

John Hart's Medicare patients by sex, 2024

  • Women35451%
  • Men33649%

Chronic conditions among John Hart's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol68%
  3. Arthritis45%
  4. Diabetes39%
  5. Cancer32%
  6. Chronic kidney disease32%
  7. Ischemic heart disease30%
  8. Anxiety28%

Share of Medicare patients with each condition. A patient can have several.

John Hart's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 56

Patient panel by sex, all payers

  • Women56%
  • Men43%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

How John A. Hart takes part in Medicare

John Hart accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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John A. Hart received $7,065 in industry payments from 2017 to 2022

CMS Open Payments shows 10 general payments to John Hart from 3 drug and device companies from 2017 to 2022. Consulting fees make up the largest share, 84% of the total. Alexion Pharmaceuticals, Inc. paid the most, $4,081.

General payments to John Hart by program year, 2017 to 2022

General payments to John Hart by kind, 2017 to 2022

$7.1Kin total
  • Consulting fees$5,90584%
  • Travel and lodging$83812%
  • Food and beverage$3225%

Companies that paid John Hart the most, 2017 to 2022

Share is of all general payments to this clinician.

See all payments to John Hart

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for John A. Hart's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about John A. Hart

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is John A. Hart's NPI number?

John A. Hart's NPI number is 1750433439. It was assigned on January 16, 2007, and it is active in the NPI Registry.

What does John A. Hart specialize in?

John A. Hart is a pathologist in Chicago, Illinois. The primary specialty in the NPI Registry is Anatomic Pathology Physician (taxonomy code 207ZP0101X).

Where does John A. Hart practice?

John Hart practices at 5841 S Maryland Ave, Chicago, IL 60637. John Hart's primary practice is The University of Chicago Medical Center in Chicago, Illinois. Dmand AI also links John Hart to 4 hospitals.

What is John A. Hart's office phone number?

The practice phone on file for John Hart is (773) 702-1530.

What is John A. Hart's medical license number?

John Hart holds Illinois license 036082583.

Which hospitals is John A. Hart affiliated with?

John Hart is affiliated with University of Chicago Medical Center. Dmand AI links John Hart to 4 more hospitals.

What medical group is John A. Hart part of?

John Hart is linked to UChicago Medicine Physicians (University of Chicago Physicians Group).

Does John A. Hart accept Medicare?

Yes. CMS data shows John Hart billed Medicare for 2,215 services in 2024, and John Hart accepts Medicare assignment.

How many Medicare patients does John A. Hart see?

CMS counts 690 Medicare patients who saw John Hart in 2024, with an average age of 70.

What services does John A. Hart bill to Medicare?

In 2024, John Hart's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88313) and lab and pathology test (88307).

Has John A. Hart received payments from drug or device companies?

CMS Open Payments shows $7,065 in general payments to John Hart from 3 companies from 2017 to 2022. The largest total came from Alexion Pharmaceuticals, Inc.

How long has John A. Hart been practicing?

John Hart graduated from medical school in 1986, 40 years ago.

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